Section 12-Casters, Fork And Fork Stem Assemblies; Removing/Installing/Repositioning The Caster Assemblies; Standard Forks - Invacare ProSPIN X4 Owner's Manual

SECTION 12—CASTERS, FORK AND
FORK STEM ASSEMBLIES
The seat height, seat depth, back angle, seating system, size/position of the rear
wheels, size/position of the front casters, as well as the user condition directly relate
to the stability of the wheelchair. Any change to one or any combination of the nine
may cause the wheelchair to decrease in stability. These adjustments MUST be
performed by a qualified technician.
After ANY adjustments, repair or service and before use, make sure all attaching
hardware is tightened securely - otherwise injury or damage may occur.
Removing/Installing/Repositioning the Caster
Assemblies
NOTE: If replacing a front caster note the mounting position of the existing front caster for
installation of the new front caster.
NOTE: If repositioning front casters or replacing the existing front caster with a caster of a
different size, refer to Changing Front Seat‐to‐Floor Height on page 93 to determine the front
caster position needed for the required front seat‐to‐floor height.
NOTE: Both front casters MUST be the same size and adjusted to the same height.

Standard Forks

NOTE: For this procedure, refer to FIGURE 12.1.
Removing Front Caster
1. Remove the mounting bolt, axle
spacers and locknut that secure the
front caster to the fork.
2. Remove the caster from the fork.
Installing Front Caster
1. Using the mounting bolt, axle spacers
and locknut, secure the caster to the
desired caster mounting position.
2. Ensure fork stem is 90° perpendicular
to the flat surface. Refer to Checking/
Adjusting Fork Stem Angle on page 85.
Part No 1125104
SECTION 12—CASTERS, FORK AND FORK STEM ASSEMBLIES
WARNING
79
Fork
Mounting Bolt
Caster
Axle
Spacer
FIGURE 12.1 Removing/Installing/
Repositioning the Caster Assemblies -
Standard Forks
Locknut
Axle
Spacer
ProSPIN™ X4™